1. The problem statement, all variables and given/known data
I'm trying to determine the difference between natural rubber and synthetic rubber using an undergraduate pulse-nmr machine... The graphs I obtained only show a difference in T2 time (shorter in the synthetic) but nothing else - but i'm supposed to "explain using my knowledge of rubber why the NMR response might be distinctly different between the rubber types" and i'm not sure where to start...

3. The attempt at a solution
All i could think of is that although the synthetic rubber is similar to the natural rubber the T2 has been shortened due to the curing process or something but i dont know why... I would've expected the t2 in the synthetic to be longer